body #main-wrapper {
background-color: #FFFFFF !important;
background-image: url('http://example.com/sites/default/files/image.jpg') !important;
background-repeat: no-repeat !important;
background-attachment: scroll !important;
background-position: left top !important;
background-size: cover !important;
-webkit-background-size: cover !important;
-moz-background-size: cover !important;
-o-background-size: cover !important;
}
http://ryzmburk.cz/sites/default/files/inline-images/22135421_10212553942874966_4451571563973868724_o_0.jpg
Background Image
By default the background image will repeat itself if it is smaller than the element where it is specified, in this case the BODY element.
}http://ryzmburk.cz/sites/default/files/inline-images/22135421_10212553942874966_4451571563973868724_o_0.jpg
Background Image
By default the backgfhwgedowlhd pwjfqmperjfwmerkjwhere it is specified, in this case the BODY element.